Surgical trephine



FIG. 1 is a perspective view of a surgical trephine in accordance withthe new design;

FIG. 2 is a front view of the surgical trephine of FIG. 1 ;

FIG. 3 is a rear view of the surgical trephine of FIG. 1 ;

FIG. 4 is a left side view of the surgical trephine of FIG. 1 ;

FIG. 5 is a right side view of the surgical trephine of FIG. 1 ;

FIG. 6 is a top view of the surgical trephine of FIG. 1 ;

FIG. 7 is a bottom view of the surgical trephine of FIG. 1 ; and,

FIG. 8 is an enlarged perspective view of the bottom of the surgicaltrephine of FIG. 1 .

In the drawings, the broken lines illustrate portions of the surgicaltrephine that form no part of the claimed design.

CLAIM The ornamental design for a surgical trephine, as shown anddescribed.